Question

Place the numbers in descending order 5.9 times 10^-5 times 10^-6 3.9 times 10^-6 and 6.5 times 10^-4

Answer 1

To place the numbers in descending order, we first need to express each number in standard form:

1. \( 5.9 \times 10^{-5} \times 10^{-6} = 5.9 \times 10^{-11} \)
2. \( 3.9 \times 10^{-6} \) is already in standard form.
3. \( 6.5 \times 10^{-4} \) is also in standard form.

Now we can compare the values of each number:

- \( 6.5 \times 10^{-4} = 0.00065 \)
- \( 3.9 \times 10^{-6} = 0.0000039 \)
- \( 5.9 \times 10^{-11} = 0.000000000059 \)

Now listing these values in descending order:

1. \( 6.5 \times 10^{-4} \)
2. \( 3.9 \times 10^{-6} \)
3. \( 5.9 \times 10^{-11} \)

So the final order in descending sequence is:

**\( 6.5 \times 10^{-4}, 3.9 \times 10^{-6}, 5.9 \times 10^{-11} \)**.